Multiple Choice
The embryonic heart
A) develops from two endothelial tubes that fuse together.
B) consists of four chambers.
C) has two atria but only one ventricle.
D) doesn't beat until just prior to birth.
E) has no passages connecting right side to left side.
Correct Answer:
Verified
Correct Answer:
Verified
Q175: The onset of puberty is signaled by<br>A)
Q176: If the zygote splits into two separate
Q177: An embryonic cell that contains the potential
Q178: Developmental events are calculated from<br>A) ovulation.<br>B) conception.<br>C)
Q179: The opening that connects the right and
Q181: If neither testosterone nor mullerian-inhibiting hormone is
Q182: The hormone responsible for milk production is
Q183: If a woman ovulates two oocytes and
Q184: An infant who has just started cooing
Q185: The chorionic villi<br>A) form from branches of